- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03172468
Definition of Hemodynamic Thresholds in Out-of-Hospital Cardiac Arrest (HETOCA)
Definition of Hemodynamic Thresholds in Out-of-Hospital Cardiac Arrest: Advancing Advanced Life Support Towards Goal Directed Resuscitation
Study Overview
Status
Conditions
Detailed Description
Cardiopulmonary resuscitation (CPR) in patients suffering from cardiac arrest out of hospitals is based on strict clinical practice guidelines. However, the evidence base for these treatment recommendation is insufficient in many respects. While knowledge about basic interventions, that are capable of restoring spontaneous circulation and improving neurologically intact survival - chest compressions, application of oxygen and early defibrillation -, has increased over the last decade, advanced treatment options - advanced airway management, vascular access, application of vasoactive drugs - are still recommended, although clinical trials of varying quality failed to demonstrate any benefit in patient related outcomes.
This study seeks to establish hemodynamic threshold values that are able to discriminate between patients that achieve return of spontaneous circulation (survivors) and those that fail to do so (non-survivors). These cutoff values could act as targets for interventions during CPR (i.e. application of vasoactive drugs, use of mechanical compression devices, …) in further trials and may potentially influence clinical practice later on. Furthermore, reliable cutoff values could act as additional prognostic factors during CPR, enabling prehospital care providers to base their decisions to continue or terminate ongoing CPR efforts on a more solid basis.
To achieve this goal, 22 patients with out-of-hospital cardiac arrest (OHCA) treated by physicians of the prehospital physician response system located at the Medical University of Graz shall be included into this trial. All patients will receive Advanced Life Support (ALS) interventions according to current guidelines issued by the European Resuscitation Council (ERC). In addition, arterial lines will be placed and arterial blood pressure will be measured continuously. This intervention is already considered standard of care at this prehospital physician response system and performed routinely as part of the local ALS algorithm.
Relevant parameters - systolic arterial pressure (SAP), diastolic arterial pressure (DAP), mean arterial pressure (MAP) etc. - will be documented electronically using both the electronic documentation system already used by the prehospital physician response system and the monitor/defibrillator device. Median values will be compared between survivors and non-survivors and possible threshold values will be calculated. Cutoff values that would be best suited to act as targets in future research and clinical practice will be identified by receiver operating characteristics (ROC).
Study Type
Enrollment (Estimated)
Contacts and Locations
Study Contact
- Name: Paul Zajic, MD
- Phone Number: 80609 +43 (0) 316 385
- Email: paul.zajic@medunigraz.at
Study Contact Backup
- Name: Gerhard Prause, MD
- Phone Number: 81170 +43 (0) 316 385
- Email: gerhard.prause@medunigraz.at
Study Locations
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Styria
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Graz, Styria, Austria, 8036
- Prehospital Physician Response System, Medical University of Graz
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Sampling Method
Study Population
Description
Inclusion Criteria
- Out-of-hospital cardiac arrest
- Age >18 years
- Advanced Life Support started
- Arterial line placement possible
Exclusion Criteria
- Obvious signs of death
- Advanced Directives / Do Not Attempt Resuscitation Order
- Cardiac arrest of traumatic etiology
- Documented patient refusal in advance
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
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Survivors
Patients suffering from out-of-hospital cardiac arrest (OHCA), who achieve sustained return of spontaneous circulation (ROSC) following prehospital cardiopulmonary resuscitation.
|
Non-Survivors
Patients suffering from out-of-hospital cardiac arrest (OHCA), who are declared dead after prehospital cardiopulmonary resuscitation.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Mean Arterial Blood Pressure
Time Frame: immediately after placement of the arterial line
|
Mean arterial blood pressure measured invasively via the arterial line.
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immediately after placement of the arterial line
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Systolic Arterial Blood Pressure
Time Frame: immediately after placement of the arterial line
|
Systolic arterial blood pressure measured invasively via the arterial line.
|
immediately after placement of the arterial line
|
Diastolic Arterial Blood Pressure
Time Frame: immediately after placement of the arterial line
|
Diastolic arterial blood pressure measured invasively via the arterial line.
|
immediately after placement of the arterial line
|
Mean Arterial Blood Pressure
Time Frame: one minute after the first application of epinephrine following placement of the arterial line
|
Mean arterial blood pressure measured invasively via the arterial line.
|
one minute after the first application of epinephrine following placement of the arterial line
|
Systolic Arterial Blood Pressure
Time Frame: one minute after the first application of epinephrine following placement of the arterial line
|
Systolic arterial blood pressure measured invasively via the arterial line.
|
one minute after the first application of epinephrine following placement of the arterial line
|
Diastolic Arterial Blood Pressure
Time Frame: one minute after the first application of epinephrine following placement of the arterial line
|
Diastolic arterial blood pressure measured invasively via the arterial line.
|
one minute after the first application of epinephrine following placement of the arterial line
|
Mean Arterial Blood Pressure
Time Frame: five minutes after placement of arterial line
|
Mean arterial blood pressure measured invasively via the arterial line.
|
five minutes after placement of arterial line
|
Systolic Arterial Blood Pressure
Time Frame: five minutes after placement of arterial line
|
Systolic arterial blood pressure measured invasively via the arterial line.
|
five minutes after placement of arterial line
|
Diastolic Arterial Blood Pressure
Time Frame: five minutes after placement of arterial line
|
Diastolic arterial blood pressure measured invasively via the arterial line.
|
five minutes after placement of arterial line
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Paul Zajic, MD, Div. of General Anaesthesiology, Emergency- and Intensive Care Medicine, Medical University of Graz
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Estimated)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- HETOCA-2017-v1.1
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Study Data/Documents
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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